Prick up (one’s) ears

Do you know the English expression “prick up (one’s) ears“? Read the conversation below. Can you guess the meaning?

Kelly: How was the end-of-year meeting?

Michael: Boring. But everyone pricked up their ears when the boss started talking about the salary increase.

Does it mean

a) touch your ears

b) turn your ear towards the speaker

c) listen carefully

d) listen with contempt

The answer is below! ↓

 

Answer: c) listen carefully